TH4.R7.4

An Optimal Sequence Reconstruction Algorithm for Reed-Solomon Codes

Shubhransh Singhvi, International Institute of Information Technology - Hyderabad, India; Roni Con, Technion - Israel Institute of Technology, Israel; Han Mao Kiah, Nanyang Technological University, Singapore; Eitan Yaakobi, Technion - Israel Institute of Technology, Israel

Session:
Algebraic Aspects of Coding Theory 2

Track:
1: Algebraic Aspects of Coding Theory

Location:
VIP

Presentation Time:
Thu, 11 Jul, 17:25 - 17:45

Session Chair:
MARTINA CARDONE,
Abstract
The sequence reconstruction problem, introduced by Levenshtein in 2001, considers a scenario where the sender transmits a codeword from some codebook, and the receiver obtains N noisy outputs of the codeword. We study the problem of efficient reconstruction using N outputs that are corrupted by substitutions. Specifically, for the ubiquitous Reed-Solomon codes, we adapt the Koetter-Vardy soft-decoding algorithm, presenting a reconstruction algorithm capable of correcting beyond Johnson radius. Furthermore, the algorithm uses O(nN) field operations, where n is the codeword length.
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